Doc fixes (2026-10-24) - #922

Changed pages include:

• metrics/index.html - view
• print.html - view
• concepts/segments.html - view
• concepts/terminology.html - view
• contributing/structure.html - view
• cookbooks/clients_last_seen_bits.html - view
• cookbooks/live_data.html - view
• metrics/metrics.html - view
• tools/spark.html - view
• concepts/pipeline/event_pipeline.html - view

There are more changes not included in the list